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Lesson: Standard Molar Gas Volumes

In this lesson, we will learn how to convert between the mass or number of moles of molecules in a gas and its volume under standard conditions.

Worksheet • 8 Questions

Q1:

What is the equation relating the volume of a gas, 𝑉 , to the number of moles of the gas, 𝑛 , and its molar volume, 𝑉 π‘š ?

  • A 𝑉 = 𝑛 𝑉 π‘š
  • B 𝑉 = 𝑛 𝑉 π‘š
  • C 𝑉 = 𝑛 𝑉 π‘š
  • D 𝑉 = 𝑉 π‘š 𝑛
  • E 𝑉 = 𝑉 𝑛 π‘š

Q2:

To 2 significant figures, what is the volume of 2.0 mol of oxygen ( O ) 2 at room temperature and pressure (RTP)?

Q3:

At room temperature and pressure (RTP), a sample of oxygen ( O ) 2 occupies a volume of 10.0 L. How many moles of gas molecules are present, to 3 significant figures?

Q4:

Which of the following is the correct definition of room temperature and pressure (RTP)?

  • A 2 0 ∘ C , 1 atm
  • B 0 ∘ C , 1 bar
  • C 2 5 ∘ C , 1 bar
  • D 2 5 ∘ C , 1 atm
  • E 2 0 ∘ C , 1 bar

Q5:

What is the volume of 4.50 mol of nitrogen ( N ) 2 at room temperature and pressure (RTP), to 3 significant figures?

Q6:

What volume would 56.0 g of nitrogen trifluoride occupy at room temperature and pressure (RTP), to 3 significant figures?

Q7:

What is the molar volume of a gas at room temperature and pressure, to 2 significant figures?

Q8:

Sulfur hexafluoride is a relatively dense gas. What volume would 100 g of sulfur hexafluoride occupy at room temperature and pressure (RTP), to 3 significant figures? The molar mass of sulfur hexafluoride is 146 g/mol.
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